The LS218 is a next-generation, intelligent, active subwoofer featuring a brilliant combination of leading-edge innovation, refined engineering and unparalleled ease of use in an easy-to-deploy package.
Delivering extraordinary audio experiences and exceptional performance via system intelligence and premium components, the LS218 is the result of a deep understanding of customer needs and application requirements. The LS218 is easy to configure and deploy for applications ranging from simple, portable, plug-and-play setups, to demanding, networked, high-tech AV productions and fixed installations.
Featuring QSC Acoustic Linear Phase (ALP) design, which permits effortless combination and coherent deployment of QSC loudspeakers within the same sound system, the LS218 also provides daisy-chain connections for analog, networked digital audio (Dante® ) and AC power (PowerCON TRUE1). Two or more LS218 can be configured in a cardioid arrangement, maximizing low frequency output in front while minimizing unwanted energy around the sides and rear of the system.
Together with the LA108 or LA112 active line array loudspeakers, the LS218 can be deployed with either an array frame/ground-stack adapter or using loudspeaker poles in both horizontal and vertical orientations.
The LS218 is backed by a 6 Year Warranty when registered within 30 days of purchase.
Features
- Very high SPL output (141 dB peak) with impressive low frequency performance
- Two 18-inch (460 mm) long excursion direct radiating driver
- Energy-efficient, 5000 W peak power Class D amplifier module with Power Factor Correction and extremely low AC consumption
- Acoustic Linear Phase (ALP) design provides complementary coherence between QSC loudspeakers deployed in the same audio system delivering a uniform listening experience across the entire venue
- QSC SysNav™ (System Navigator) App allows the user to easily design, configure, control, monitor and apply signal processing to individual subwoofers, full arrays or groupings of both. Network solution includes digital audio-over-IP (Dante ®) for interoperability with other audio equipment and seamless control and monitoring integration into the Q-SYS Ecosystem via Q-SYS Inventory Extensions
- Omni-directional or cardioid radiation modes (cardioid setup requires min. 2 units)
- Selectable DEEP™ mode for extremely low frequency extension
- Rugged wooden enclosure with Polyurea coating for lasting durability
- Vertical or horizontal deployments (M20 threaded pole receivers) combined with array frame/ground-stack adapters or loudspeaker poles.
- Complemented by LA108 and LA112 active line array loudspeakers
- 6 Year Warranty when registered within 30 days of purchase
- Available Mid-2026
Specifications (preliminary)
| Model | LS218 |
|---|---|
| Configuration | Direct radiating, active subwoofer |
| LF Transducer | (2x) 460 mm (18-inch), cone |
| Frequency Response (-6 dB) | 41 Hz - 98 Hz |
| Frequency Range (-10 dB) | 35 Hz - 111 Hz |
| Nominal Coverage Angle | Omni-directional or cardioid radiation modes (cardioid setup requires min. 2 units) |
| Maximum Rated SPL1 (peak) | 141 dB @1 m (peak) |
| Amplifier (peak) | Class D, 5000 W |
| Cooling | Low noise, variable speed fan |
| Controls | Rotary push encoder 2 x Push buttons (Menu, ID) |
| Display Screen | 61 mm (2.4-inch) Full color display area (240 x 320 pixels) |
| Indicators | Power LED Limiter active LED Standby active LED 2 x Signal LED |
| Connectors | XLR Female (Analog In) XLR Male (Analog Thru) 2 x RJ45 EtherCON (Dante® and QSC SysNav™ In/Thru) 2 x PowerCON TRUE1 (AC Power Inlet/Outlet) |
| AC Power Input | Universal power supply 100–240 VAC, 50–60 Hz |
| AC Power Consumption2 | 100 VAC, X A / 120 VAC, X A / 230 VAC, X A |
| Enclosure Material | 15 mm birch plywood with Polyurea coating |
| Color | Black (RAL 9011) |
| Grille | 16 GA Powder coated steel |
| Dimensions (H × W × D) (Without Casters) | 638 × 1023 × 696 mm 25.1 × 40.3 × 27.4 inches |
| Carton Dimensions (H×W×D) | TBD |
| Net Weight | TBD |
| Shipping Weight | TBD |
| Included Accessories | 1 x PowerCON TRUE1 power cable |
| Optional Accessories | CASTER KIT-L, SP-16X, SP-26, SP-36, COVER 1 (TBD), COVER 2 (TBD), Caster Cart (TBD), M10 KIT-W, LS-KIT-J |
| Battery Chemistry | Lithium manganese dioxide |
| Regulatory | CE, WEEE, UL, China RoHS, RoHS II, FCC Class B |
1 Measured at 1 meter, on-axis, in half-space using Pink Noise, Crest Factor 10 dB unweighted.
2 1/8 power is representative of current draw with typical music program material with occasional clipping.
Dante is a registered trademark of Audinate Pty Ltd. EtherCON and PowerCON are registered trademarks of Neutrik.
Windows is a registered trademark of Microsoft. MacOS and iOS are registered trademarks of Apple.
Specifications subject to change without prior notice.
